Airway traffic control system



March 1952 H. c. KENDALL ET AL 2,588,931

AIRWAY TRAFFIC CONTROL SYSTEM Filed April 30, 1949 43 Sheets-Sheet l INVENTORS H.C. Kendal/pm] y 0rpln M ATTORNEY.

March 11, 1952 H. c. KENDALL ET AL 2,588,931

AIRWAY TRAFFIC CONTROL SYSTEM Filed April 50, 1949 43 Sheets-Sheet 2 1 I 9 LL Sr E 2 N i 3 2" 5 l '3' R z 4/4/15,J 5 5 [Q1 T .0 Q LL g INVENTORS H.C.Kenda// and BY THE/R ATTORNEY.

March 11, 19 2 H. c. KENDALL ET AL AIRWAY TRAFFIC CONTROL SYSTEM 43 Sheets-Sheet 5 Filed April 30, 1949 E Q5 2;; 55: ii x E? v i? It? 3 E11 m D :1

JQL nMWJDL EMOQE-r UDDCHZ dun l nun dnm MMQOEP 1027M. .uvmxwm dmdE THEIR ATTORNEY March 11, 1952 H. c. KENDALL ET AL 2,588,931

AIRWAY TRAFFIC CONTROL SYSTEM Filed April 50, 1949 43 Sheets-Sheet 6 lll Fla. 5b.

IN V EN TORS H.C.Kendall and y L.H. Orpm Za /MM v THEIR ATTORNEY TO FlGSq.

March 11, 1952 H. C. KENDALL ET AL AIRWAY TRAFFIC CONTROL SYSTEM Fil ed April 30, 1949 43 Sheets-Sheet '7 mwi 0L.

March 11, 1952 Filed April 30, 1949 45 Sheets-Sheet 8 o n- U n: o 3 N 2 w 8 8 l: Q I: C 19 ":1; L? 54 ,9

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THEIR ATTORNEY H. C. KENDALL ET AL AIRWAY TRAFFIC CONTROL SYSTEM 43 Sheets-Sheet 9 March 11, 1952 Filed April 30, 1949 SYNCHRONIZATIDN PULSE WIDTH DISCRIMINATOR&0UTPUT CIRCUIT I03 i I I @Lmo 73 I 4.-1 'r|ME DIVIDER 4T0 BLOCK 8:

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THEIR ATTORNEY.

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THEIR ATTORNEY March 11, 1952 H.C. KENDALL ET AL 2,583,931 AIRWAY TRAFFIC CONTROL SYSTEM Filed April 50, 1949 45 Sheets-Sheet 1s IFROM 29 or@ LINE 572% RESPONSE ckT. gg 420 421 42? FROM LINE 415 IF OCCUPANCY cKI LINE 412 IF DOUBLE OCCUPANCYCIRCUITI l 7 W96 I 450 LINE189 or 1% I 4% 429 451 FROM BLOCK 52 IF RESPONSE CIRCUIT 4 -OR- 422 or LINE 165 FROM BLOCK 75 IF I OCCUPANCY 'OR" DOUBLE OCCUPANCY CIRCUIT LINE44OIF RVESPONSE cmcwr LINE440IF OCCUPANCY cmcurr I H T BLOCK LINE 441 IFDOUBLE OCCUPANCY cmcurr a4 TYPICAL RESPONSE, occuPANg 0R p6orfiLE OCCUIIPANCY DETECTION cmcufi I G. I

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57 TYPICAL 5I6NAL RELAY CIRCUIT BY gzfm/ Fla. 6 i. W

THEIR AITOHNEY AIRWAY TRAFFIC CONTROL SYSTEM Filed April 30, 1949 43 Sheets-Sheet l8 I I I l I l 455 NORMAL TUBE @00 OF] I 159 ALT ZONE 20F 454 BLOCK a@ I 4 I I FROM BLOCK 82 I 51H I I L451 6 I96 I I 511 I I 479 I A TO SCREEN GRID CHECKI mama OFALT. 2am: I I W 445 2 OF BLOCK Isa I I H i 509 T0 SCREEN GRID BLANKI I j I war: 000 or ALT. ZONE I I 20F BLOCK 86 I l 447 I 440 I, 441 5?? I II I I D ZII I II I DO FROM ZNDALI ZONE L G L was Mai-5; No.4 I uLsE IiIiPii i I TUDE4250F I TUBE425 LOCK 54 I I I BLOCK 64 I IaFBLocm LI 5 I I I I I 461 I I I I I I I I I I I I I I I I I I I I I W70 i I l' I I l I I I I ..I..IL I I .5-

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AIRWAY TRAFFIC CONTROL SYSTEM Filed April 50, 1949 45 Sheets-Sheet 2o s=- 2M /i FROM man 2 667 VOLTAGE SOURCE 7 IL T0 CATHODE OF I 660 OSCILLATOR I 668 I FROM PULSE C FORMlNG 664 Lg 22 K5 (ARCUITS 670 I 88 & so 669 mg; FORMlNLClRCUlTS /e'15 2 a. 550. RPM.

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